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Re: Other: concrete kayak
By:Bill Hamm
Date: 2/26/2012, 2:31 am
In Response To: Re: Other: concrete kayak (Dan Caouette (CSFW))

: Back in college, 16-odd years ago, I was on a civil engineering
: team that built a concrete canoe (C2). I was late to the fun and
: only got to help a bit in the painting. It was made of
: ultra-light weight concrete (a brick of it would floated on it's
: own) over chicken wire. It was about 3/8" thick and weighed
: about a 100 pounds. It cracked in half the first time on the
: water... Looking back on it, I can see why: it had virtually no
: gunwales and only one, thin thwart. It just buckled upon itself.
: You should have better luck with a kayak. Having a deck will
: help incredibly.

: You'll have a hard time finding an off-the-shelf design based on
: those size constraints: 5m x 80cm (16.4' long x 31.5"
: wide). Sounds more like a canoe... You'll have to design it
: yourself. Download a copy of KayakFoundry
: (http://www.blueheronkayaks.com/kayak/software/software.htm) and
: start playing.

: Have fun!

I think before I even gave a slight thought to the design, I'd be doing some serious experimenting with materials. Concrete is a pretty strong material but thin sections aren't well understood I'd bet. I think I'd look at fiberglass reinforced concrete and see if you can make that work. Agregates (sp?) will be a challenge I'd think.

Bill H.

Messages In This Thread

Other: concrete kayak
gilad naor -- 2/21/2012, 10:22 am
Re: Other: concrete kayak
Robert N Pruden -- 2/21/2012, 12:45 pm
Re: Other: concrete kayak
Matthias -- 2/22/2012, 2:25 am
Re: Other: concrete kayak
gilad naor -- 2/22/2012, 3:26 am
Re: Other: concrete kayak
Dan Caouette (CSFW) -- 2/22/2012, 8:26 am
Re: Other: concrete kayak
Bill Hamm -- 2/26/2012, 2:31 am
Re: Other: concrete kayak
Mike Savage -- 2/26/2012, 11:19 am
Re: Other: concrete kayak
ancient kayaker -- 2/26/2012, 12:43 pm
Re: Other: concrete kayak
Bill Hamm -- 2/28/2012, 2:41 am
Re: Other: concrete kayak
Björn Thomasson -- 2/28/2012, 4:01 pm
Re: Other: concrete kayak
Bill Hamm -- 2/29/2012, 1:57 am
Re: Other: concrete kayak
Björn Thomasson -- 2/29/2012, 2:29 am
Re: Other: concrete kayak
Bill Hamm -- 2/29/2012, 1:59 am
Re: Other: concrete kayak *PIC*
Björn Thomasson -- 2/29/2012, 2:51 am
Re: Other: concrete kayak
Etienne Muller -- 2/29/2012, 3:23 am
Re: Other: concrete kayak
Björn Thomasson -- 2/29/2012, 4:03 am
Re: Other: concrete kayak
Bill Hamm -- 3/1/2012, 1:51 am
Re: Other: concrete kayak
Paul G. Jacobson -- 3/7/2012, 6:10 pm
Re: Other: concrete kayak
Rob Macks/Laughing Loon CC&K -- 3/7/2012, 8:57 pm
Re: Other: concrete kayak
Bill Hamm -- 3/8/2012, 2:09 am
Re: concrete or newspaper kayaks
Paul G. Jacobson -- 3/8/2012, 2:53 am
Re: concrete or newspaper kayaks
Jim Ham -- 3/9/2012, 12:13 am
Re: concrete or newspaper kayaks
Ulrik Schou -- 3/9/2012, 1:31 am
Re: concrete or newspaper kayaks
Björn Thomasson -- 3/9/2012, 1:11 pm
Re: Other: concrete kayak
John Messinger -- 3/1/2012, 5:44 pm
Re: Other: concrete kayak
Mike Savage -- 3/2/2012, 9:45 am
Re: Other: concrete kayak
Bill Hamm -- 3/4/2012, 2:01 am
Re: Other: concrete kayak
John Messinger -- 3/4/2012, 7:34 am
Re: Other: concrete kayak
Paul G. Jacobson -- 3/8/2012, 2:40 am
Re: Other: concrete kayak
Kevin McAtee -- 3/8/2012, 3:57 pm
Re: Other: concrete kayak
Mike Savage -- 3/9/2012, 4:49 am
Re: Other: concrete kayak
Robert N Pruden -- 3/13/2012, 6:02 pm
Re: Other: concrete kayak
John Messinger -- 3/14/2012, 9:46 am
Re: Other: concrete kayak
Robert N Pruden -- 3/14/2012, 9:58 am
Re: Other: concrete kayak
Cole -- 3/9/2012, 9:21 am